
#include "fdump.h"
#include <stdio.h>
#include "b4.h"    /* zigzag_order */
#include "quant.h" /* stdlqt, stdcqt */
#include "my_types.h"

int ldhtftab[] = {
  28,
  0x0,0x1,0x5,0x1,0x1,0x1,0x1,0x1,  
  0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7, 
  0x8,0x9,0xa,0xb};

int cdhtftab[] = {
  28,
  0x0,0x3,0x1,0x1,0x1,0x1,0x1,0x1,
  0x1,0x1,0x1,0x0,0x0,0x0,0x0,0x0,
  0x0,0x1,0x2,0x3,0x4,0x5,0x6,0x7,
  0x8,0x9,0xa,0xb};

int lahtftab[] = {
  178,
  0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d,
  0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
  0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
  0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
  0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
  0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
  0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
  0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
  0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
  0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
  0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
  0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
  0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
  0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
  0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
  0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
  0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
  0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
  0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
  0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
  0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
  0xf9, 0xfa 
};

int cahtftab[] = {
  178,
  0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77,
  0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
  0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
  0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
  0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
  0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
  0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
  0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
  0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
  0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
  0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
  0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
  0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
  0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
  0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
  0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
  0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
  0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
  0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
  0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
  0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
  0xf9, 0xfa 
};

FILE *outfile;

unsigned int   bb;
unsigned int   nbb;

void wb(int j) {
  /* printf("write byte %d\n", j); */
  fprintf(outfile, "%c", j); 
}

void ww(int j) {
  wb(j>>8);
  wb(j);
}

void fdump_init(char *filename, int sizex, int sizey) {
  int qv, i;

  outfile = fopen(filename,"w");
  bb      = 0; /* bitbuffer */
  nbb     = 0;

  ww(0xffd8); // SOI
  ww(0xffe0); // APP0
  ww(0x0010);
  ww(0x4a46); // standard APP0 marker
  ww(0x4946); 
  ww(0x0001);
  ww(0x0100); 
  ww(0x0001); // Xdensity
  ww(0x0001); // Ydensity
  ww(0x0000); // thumbnail
  
  ww(0xffdb); // quantization table
  ww(0x0043);
  wb(0x00);   // table #0; luminance
  for (qv=0; qv<64; ++qv) {
    wb(stdlqt[zigzag_order[qv]]);
  }

  ww(0xffdb); // quantization table
  ww(0x0043);
  wb(0x01);   // table #1; chrominance
  for (qv=0; qv<64; ++qv) {
    wb(stdcqt[zigzag_order[qv]]);
  }

  ww(0xffc0); // SOF
  ww(0x0011); // Frame Header Length
  wb(0x08);   // sample precision
  ww(sizey);  // x size
  ww(sizex);
  wb(0x03);   // 3 components
  wb(0x01); wb(0x21); wb(0x00); // comp0, step x;y 2;1 , qtab #0 
  wb(0x02); wb(0x11); wb(0x01); // comp1, step x;y 1;1 , qtab #1
  wb(0x03); wb(0x11); wb(0x01); // comp2, step x;y 1;1 , qtab #1

  // HUFFMAN TABLE DC # 0
  ww(0xffc4); 
  ww(3 + ldhtftab[0]);
  wb(0x00);
  for (i=0; i<ldhtftab[0]; i++)
    wb(ldhtftab[i+1]);

  // HUFFMAN TABLE AC # 0
  ww(0xffc4); 
  ww(3 + lahtftab[0]);
  wb(0x10);
  for (i=0; i<lahtftab[0]; i++)
    wb(lahtftab[i+1]);

  // HUFFMAN TABLE DC # 1
  ww(0xffc4); 
  ww(3 + cdhtftab[0]);
  wb(0x01);
  for (i=0; i<cdhtftab[0]; i++)
    wb(cdhtftab[i+1]);

  // HUFFMAN TABLE AC # 1
  ww(0xffc4); 
  ww(3 + cahtftab[0]);
  wb(0x11);
  for (i=0; i<cahtftab[0]; i++)
    wb(cahtftab[i+1]);

  ww(0xffda); // SOS
  ww(0x000c);
  wb(0x03);   // components
  ww(0x0100); // comp 0 - huffman table sel
  ww(0x0211); // comp 1 - huffman table sel
  ww(0x0311); // comp 2 - huffman table sel
  ww(0x003f); // fixed for baseline jpeg
  wb(0x00);
}

void STORE_BITS(int bb) {                                                                       
  unsigned char t;

  t = bb>>24;
  wb(t);
  if (t == 0xff) wb(0);;

  t = bb>>16;
  wb(t);
  if (t == 0xff) wb(0);

  t = bb>>8;
  wb(t);
  if (t == 0xff) wb(0);

  t = bb;
  wb(t);
  if (t == 0xff) wb(0);
}

void fdump_run(fifo<D_HUF_VAL> *VAL, fifo<D_HUF_BITS> *BITS) {
  int _bits;
  int _n;
  while (VAL->len() >=1) {
    _n    = BITS->read();
    _bits = VAL->read();
    nbb += _n;                                                          
    if (nbb > 32)  {                                                  
      unsigned int extra = nbb - 32;                                      
      bb |= (unsigned int)_bits >> extra;                                   
      STORE_BITS(bb);
      bb = (unsigned int)_bits << 32 - extra;                             
      nbb = extra;                                                    
    } else {                                                              
      bb |= (unsigned int)_bits << 32 - nbb;
    }
  }
}

void fdump_finish() {
 unsigned char t;
  
  if (nbb > 0) { 
    t = bb>>24;
    wb(t);
    if (t == 0xff) wb(0);;
  }
  
  if (nbb > 8) {
    t = bb>>16;
    wb(t);
    if (t == 0xff) wb(0);
  }
  
  if (nbb > 16) {
    t = bb>>8;
    wb(t);
    if (t == 0xff) wb(0);
  }
  
  if (nbb > 24) {
    t = bb; 
    wb(t);
    if (t == 0xff) wb(0);
  }
  ww(0xffd9);  
  fclose(outfile);
}

